Wrong fuel in your BMW 325xi? Diesel in your Petrol BMW?

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BMW Fuel Drain


Filling up with Diesel in a Petrol BMW is a fairly typical problem. And its solution will depend on a number of factors. If perhaps you would like to find out what you ought to do about it then read on.
Let us discuss the key variables to consider whenever deciding whether or not to get your car drained:

  1. Exactly how much Diesel have you put in the BMW, taking into account that the fuel capacity of your BMW 325xi is usually about 63 litres?
    1. Hardly any Diesel, less than 3.15 litres of Diesel in a Petrol 325xi will more often than not not really be a massive problem. Experience has shown us that an amount under 3.15 litres (which is 5% of the total fuel tank volume) is very often capable of being completely diluted through thoroughly filling the rest of the tank with Petrol.
      It's relatively uncommon to encounter a vehicle going through problems with below 5% wrong fuel contamination. Be aware that it's infrequent - definitely not impossible to find. There are certain vehicles that won't endure any amount of fuel contamination at all.
    2. Somewhere between 3.15 and 6.3 litres of Diesel in the BMW (5 to 10%) is a 50/50 situation. Our expertise has shown that as many motorists get away with this as all those who break down. When deciding whether or not to risk it and basically top it up remember that it is much like gambling your car on black - you've got a 50/50 chance of it working.
    3. Anything in excess of 6.3 litres of Diesel in your Petrol 325xi ought to straight away be drained seeing that your likelihood of driving with that quantity of contamination is almost certainly lower than one in 50 - extremely big odds.
  2. Put some Diesel in a Petrol BMW and drove it: Have you seen any kind of performance issues as a result of putting the incorrect fuel in your 325xi? In that case, get it removed regardless of the volume of Diesel or even the contamination percentage. Proceeding to run running a motor vehicle that is starting to suffer the effects of wrong fuel contamination will probably likely result in increasing amounts of harm affecting your fuel system parts.
  3. Are you looking for security?
    Then simply just get it removed. No matter the contamination ratio, there is inevitably some degree of threat connected with running a Petrol motor on Petrol contaminated with Diesel. Possible consequences of driving a car on the wrong fuel can include the engine refusing to start, running unevenly, loss in power, wearing of the high-pressure pump, worn out or bunged injectors, and so forth. These are several of the most common Diesel in Petrol symptoms, and should you recognise any of them stop and get it removed as soon as possible.

Do not simply have any unqualified mechanic to try to drain your car. We are BMW experts and possess the skills and knowledge required to make certain that you get back on the road with little hassle or worry.

Put Diesel in a Petrol BMW

Mistakenly put Diesel in a Petrol BMW? Or possibly even put contaminated fuel in your BMW 325xi?

Give us a call for Help & Guidance

Give us a call and obtain straightforward recommendations and practical assistance for your exact circumstance

We come out and do the fuel drain

We would come to you to do the complete contaminated fuel drain & purge right there on scene

Once performed You Get Going Once again

Once we have finished you can get back on your way and get on with your trip

Wrong Fuel Drain Specialists

We are the top rated wrong fuel drain specialists in the UK, offering countrywide service, for BMW motorists in particular. We predominantly attend to:

  • Unleaded petrol in your Diesel Vehicle
  • Diesel in Unleaded Petrol Car
  • AdBlue contamination
  • Water contamination

We are BMW specialists and have successfully drained thousands of Petrol BMW vehicles. No matter if it is at the roadside, on a station forecourt, or even at home, we can get you on the road once again.

The Procedure

The method of removing Diesel from a Petrol car is in essence identical for virtually all motor vehicles. Of course it may vary a bit as each manufacturer has their unique fuel system. However it still essentially adheres to the below guidelines:

Petrol in Diesel BMW

Fuel Drain

Empty the Fuel Tank

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Wrong Fuel Drain BMW

System Flush

Clean out the fuel lines & pumps

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Petrol in Diesel Drain BMW

Vehicle Restart

Get the car up and running again

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Diesel in Petrol Questions

When someone has put Diesel in a Petrol car they have a few very common questions. So we have compiled a list of the most Frequently Asked Questions for you

I put Diesel in a Petrol car and drove it. What do I do?


Turn off the car as soon as possible and call us. Continuing to run a vehicle on the wrong fuel can potentially damage it. We will be able to give you advice and assistance based on your circumstances

Will driving a Petrol car on Diesel cause damage to it?


It can. However, if the problem is caught and remedied quickly the risks will be minimal. Of the 1,500 vehicles we attend every month, less than 0.5% have suffered and substantial damage requiring parts replacement.

How much Diesel can I get away with in a Petrol car?


The safe answer is none. However you might be able to get away with a very low contamination ratio. That being said, we always highly recommend draining anything over a 5% contamination ratio asap.

I know about petrol in diesel, but what about Super Unleaded?


Putting Super Unleaded, or Shell V-Power, BP Ultimate Unleaded, etc, will have the exact same effect as putting regular unleaded petrol in your diesel car and will need to be drained out and flushed.

Will getting you to do a fuel drain void my warranty?


No! The EU Block Exemption Regulations clearly state that "the work can be carried out by as long as that garage uses manufacturer approved parts and correctly follows the manufacturer's service schedule."

Can I top it up with Petrol and add some 2-stroke oil?


This might work on some vehicles in some cases, but in the majority on instances it won't and you risk damaging the Lambda sensors as well as fuel pump and injectors, just as a regular misfuel.

Contact Us

If you have any enquiries or want some assistance please Contact Us!
We are able to get you moving once again.

24/7 BMW Helpline

0333 366 0103

Our Corporate Office

Fuel Fixer Ltd, Linx House, 147 London Road, East Grinstead, RH19 1ET


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